Note: Descriptions are shown in the official language in which they were submitted.
REVERSIBLE NAIL SET
BACKGROUND OF THE INVENTION
Field of the Invention
100011 The present invention relates to a nail set having a reversible tool
portion
to facilitate driving of different sized nails.
[0002] Nail sets are generally used in woodworking for directing a nail which
is
protruding above the surface of the work-piece to a depth below the surface of
the work-
piece to eliminate exposure thereof and for allowing the resulting countersunk
hole to be
filled with appropriate material (e.g., wood putty) preparatory to finishing
the work-
JO piece.
[00031 Generally, when the user nails finish nails into the surface of the
work-
piece, the user often cannot drive the nail completely into the work-piece or
the user will
damage the surface of the work-piece. The nail set is generally constnieted
and arranged
such that a tip portion of the nail set is placed on a head of the finish
nail. A finish nail
generally has a dent or groove on its head to allow for placement of the nail
set. A
setting tool is then configured to impact a head portion of the nail set,
driving the finish
nail completely into the work-piece. Therefore, the nail set drives the finish
nail into the
work-piece without damaging the surface of the work-piece.
100041 Nail sets generally have a handle portion which is gripped by a user, a
head portion which is impacted by the setting tool, and a tip or work portion
which
terminates in a point configuration that is adapted securely engage with the
nail head
while resisting drilling of the tool from head thereby preventing marring or
disfiguration
of the surrounding material.
[0005] Generally in woodworking, finish nails of varying sizes may be
utilized.
Accordingly, for each discrete nail head, the user must select the appropriate
nail set
requiring the location and selection thereof for each nail size. A tradesman
or user may
carry one to three separate nail sets in order to utilize different sized
tips. In addition to
CA 2718256 2017-06-13
CA 02718256 2010-10-15
2
the need for a separate nail set for each size classifiCation, the associated
changeover
time may encourage the user to continue to use the current tool for thel,vrong
size. nail.
100061 The present invention provides several improvements over the prior art.
SUMMARY OF THE INVENTION
100071 One aspect of the present invention provides a nail set that includes a
body portion and a tool portion, The body portion includes an opening formed
therein.
- The tool portion includes a first work portion at one end portion thereof,
and a second
work portion at an opposite end portion thereof The first work portion and.
the second
work portion are constructed and arranged to be interchangeably received in
the opening.
The tool portion includes an outwardly extending shoulder portion between the
first
work portion and the second. work portion. The outwardly extending shoulder
portion is
constructed and arranged to. provide a path for three transmitted from the
body .portion,
when the tool portion is disposed in the body portion and the body portion is
impacted by
a tool.
E00081 These and. other aspects of the present invention, as well as the
methods
of operation and 'functions of the related elements of structure and the:
combinatiOn of
parts and economies of manufatture, will become more apparent upon
consideration of
the following description and the appended claims with reference to the
accompanying
drawings, all of which form a part of this speeification, wherein like
reference numerals
designate corresponding parts in the various. figures. In one embodiment of
the
-
invention, the structural components illustrated can be considered .are drawn
to scale. It:
- is to be
expressly understood, however, that. the drawings are for the purpose of
illustration anO, description only and are not intended as a definition of the
limits of the
invention. It shall also be appreciated that the features of one embodiment
disclosed
herein can be used in other embodiments disclosed herein.. As used in the
specification
and in the claims, the singular form of "a",."an", and "the" include plural
referents unless
the context clearly dictates otherwise.
CA 02718256 2010-10-15
BRIEF DESCRIPTIWOr THE DRAWINGS
1.066.91 FIG. I is a perspective view of a nail set with an additional tool
portion
shown next to the nail set in .:accordance With An embodiment of the present
invention; :
100101 FIG., 2 is a side view of the nail Set in accordance with an embodiment
of
the 'present on; "
100111 FIG. 3 is a sectional View of the nail set taken along axis A,A in JiG
2 in
okcurdance with an embodiment of the present invention
10012] FIG. 4 is a perspective view of the nail set, in which a lock
arrangement is
:pulled up to relea,se the tool portion in accordance With an embodiment Of
the :present
.19 invention;
I00131 :#1a. 5 is a side' view Of the nail set in accordance with another
MbOditnent ofthe present : invention;
[00141 FIG 6 is a Sectional view of the nail set taken along axiS 13-8 in FIG.
5 in
'accordance with anOtherethbodhpent of the present in cation
tools] rte. 7 is a perspective view of the nail set, in Which a:lOck
arrangement is
pushed to release the tool polling in accordance with another embodiment of
the present
invention;
[0016i FIGS. 8.A...8l} show aside view, a sectiolial view (f41(en along :axis
C-C in :
VICI. 8A), a hunt view, and a perspective view of a tool portion :respectively
in
accordance with another erahOditnent of the present invention.; and
100171 HGS 9A-91., Show a gide view, a: sectional view (taken along axis D-D
in
FIG. 9A I a front vicvv, a rear view and aperspectiVe :view of a body portion
mspectively
in accordance with another embodiment of the present invention.
,DETAILEDDESMIPTION OF THE INVENTION
100181 FIGS. i-4 show a nail sot IQ in accordance With an embodiment of the
present lOyclition, Riosnail set 10 includes a body portion 12 and 4 tool
portion 14. :The
CA 02718256 2010-10-15
=
body Portion Itliteludes:an oPening.161formed therein.. The tool portion 14
includes a
first work portion 1* at one :end portion 20 thereof; anti .a second work
portion 22 at an
-
opposite end portion. 24 thereof.: The first work portion 18 arid the second
Work:.portioW =
22 -are:oonstructed and arranged to be interchangeably, received in the
opening 1:6i The
tool portion 14 includes: an outwardly: extending shoulder portion 26 between
the first
work portion 18 and the second -work portion 22. The ourisandly egtetiding
shoulder
portion 26. is. constructed and arranged to provide a path foCforce
transinitted from the
body portion 12-to:the tool portion 14, when the tool portion 14 is disposed
in the body
portion 1.4 and the body portion 12 isi:impacted by a striking OW, such as a
hammer .(tiOt
.shown).
100191 In One embodiment, the body portion 12 :and the :tool portion s .14 are
generally made of fully hardened4reeision-rnilled..steel or nickel
plated:Steel. The fully
hardened, precision-milled steel or the nickel plated steel is generally
configured not -
only to provide the nail set :141*ith::tionger life but also to reduce
bending, cracking,:
and/or chipping of the maset10. In another embodiment, the body portion 12 and
the
tool portion 14 are generally made of an impact resistant material stich::as
hardened, tool :
steel. [n yet another :embodiment: the body portion 12 and the tool portion 14
are
generallylnade of alloy steei that is hardened and tempered;,
1110201 The bodypoitiOn 12 Includes a handle portion 30 and, a head portion
In one embodimentjtheheadportion 32:is:cons1ructedand arranged to be iimpacted
by a:
striking tool such go.* hammier, In One: embodiment, the :head.portiOn,PMay
include a
head strike :surface 32a that is constructed and arranged to receivea, hie*
from the
.
impact :delivering tool. In the illustrated embodiment, as shown in fIGS, 1-4,
the head
portion .32 includes a square -shaped configuration. 'the square-sbaped
configurtition of
the. head .portion 320 ...COnStrneted and arranged to 'prevent the nail set 10
from .r011ing
when the nail set 10 is-Set:down:on a surface. Other shapes of the bead
.portion Can be
:used, such as round or hexagonal, as non4iiniting other exampleS In one
embodiment,:
thehead portion :30 may have advertising or promotional intbrrnation such as
indicia (not
thaw) fox identifying terodtiet and/or .inantitucturet to the C:0101001%,
.10021) In one embodiment;!thehatidle portion 30 is constructed and arranged
to
be:- gripped, by the uset! 'Tlie4tandle,partion 30 includes manually
engageable gripping
CA 02718256 2010-10-15
= = = 5
portion,. In one embodiment, the gripping portion is simply .the outer surface
of the . . =
handle portion 30. In one embodiment, the gripping portion of the handle
portion 30 is
made of an elastomeric material, a rubber based material, a plastic based
material or
- other
suitable material. Optionally, the gripping portion can be ergonomically
shaped.
5. = In one embodiment, a surface texture or pattern (e.g., ribbed) may be
provided on the
gripping portion. The surface texture or pattern is constructed and arranged
to improve
the grip of the user and to: improve precision. The ribbed pattern is
constructed and
arranged to absorb shock of impact from the impact delivering tool. The
surface texture
or pattern may be provided- by - knurling, sand blaSting, rubber coating, or
any other
surface texturing methods known inthe art. In the illustrated embodiment, as
shown in.
.
FIGS. I and 4, a diamond-shaped (criss-cross) knurling pattern is provided on
the handle
portion 30 to enable the user's hands or fingers get a better grip :cat the
nail set 10. In one
embodiment. the gipping portion may include a slip-resistant surface that is
constructed
and arranged to be used in. all weather conditions, in one embodiment, the
gripping
portion may include a cushioned grip.
[00221 In one embodiment, the length of the body portion 12 is constructed and
arranged to enable the user to set nails in hard-to-reach areas. In one
embodiment, the
- = body
portion 12 may include a knurled surface thereon, where the knurled surface is
constructed and arranged to improve the grip of the user.
E [0023] The opening. 16 of the body portion 12 is constructed and arranged to
receive at least a portion of the Cool portion 14. In one embodiment, the
opening 16 of
the body portion 12 is constructed and arranged to receive one of the first
work portion
18 or the second work portion 22- therewithin to lockinaly engage the tool
portion 14
with the body portion 12. The opening 16 of the body portion 12 generally may
include
= = a circular shaped configuration as a non-limiting example. In another
embodiment, the
opening 16 of the body portion 12 generally may include a hexagonal shaped
configuration as will be clear from. discussion with respect to FIGS. 6, 9B
and 9C. In
one embodiment, a portion of the opening 16 is constructed and arranged to
frictionally
engage with a portion of the tool portion 14.
[00241 In one embodiment, the tool portion. 14 generally includes a central
portion 38, the first work portion 18 and the . second work portion 22. In one
CA 02718256 2010-10-15
6
, embodiment, the first work portion 18 and the second work portion 22 may
include
conical or ti-usto-conical shaped configuration that are constructed and
arranged to
extend .away from the central portion 38 of the tool portion. 14. The central
portion 38
.= may generally include a circular-shaped or cylindrical-shaped
configuration. In another
- =embodiment, at least a portion of the central portion 38 may. generally
include a
- hexagonal shaped configuration as will be cleat from discussion with respect
to FIGS.
8A-8D. As will be discussed belOW, the shoulder portion 20 is disposed in the
central
portion 38 of the tool portion
100251 Inone embodiment, the first work portion 18 and the second .work
portion
22 may include .a cup-shaped configuration at one end portion 20 and at the
opposite end
portion 24 respectively. .In one embodiment, the first work portion 18 and the
second
work portion 22 may include a chamfered (or beveled) end or tip at one end
portion 20
and at the opposite end portion 24 respectively. In another embodiment,
different shaped
.andlor sized tips are provided at the opposite end portions 20 and 24,
[.00261 The tool portion 14 of the nail set 10 is removable from the body
portion
12 of the nail set 10. Since the tool portion 14 of the nail set 10 is
removable from the
body portion 12, the nail set 10 may receive other types of tips for
performing different
functions (i.e.õ tips that are not nail set tips), for example, a punch or
hole-starting tips.
En one embodiment, the tool portion 14 may include a punch. In one embodiment,
one of
the tips is a. screwdriver tip.
100271 The tool portion 14 of the nail set 10 is reversible within the body
portion
12 of the nail set 10 in one embodiment to facilitate countersinking of
different sized
nails. In other words, the reversible configuration of the tool portion 14
enables a, user to
select and use either the first work portion 18 or the second work portion 22
of the tool
= portion 14. The first work portion 18 includes a different sized tip
configuration than the
second work portion 22.
100281 When one of the first work portion 18 or the second work portion 22 is
received in the opening .16 of the body portion 12 (i.e., to lockingly engage
the tool
portion 14 with the body portion 12), the other of the first work portion 1.8
or the second
work portion 22 is exposed (i.e., outside the 'body portion 12) for operation.
Therefore,
the nail set 10 includes two' operating configurations, where each operating
.configuration
CA 02718256 2010-10-15
7
provides a nail set with a different sized tip. in the first operating
configuration, the first
w0rk portion l8 is exposed (i.e., outside the body portion 12) for operation
and the
second work portion 22 is disposed inside the body portion 12 to lockingly
engage the
tool portion 14 with the body portion 12. In the second operating
configuration, the
second work portion 22 is exposed (i.e., outside the body portion 12) for
operation and
the first work portion 18 is disposed inside the body portion 12 to lockingly
engage the
tool portion 14 with the body portion 12.
100291 in one embodiment, the first work portion 18 and the second work
portion
22 are constructed and arranged to be related with nail heads of different
sizes. in one
embodiment, the first work portion 18 and the second work portion 22 of the
tool portion
14 may be color coded by their tip size for quick identification. The color
coding may be
provided by one or more color bands or stripes that are circumferentially
placed on the
first work: portion 18 a,tid the second work portion 22. For example, for
1132" tip a
yellOw color band is provided on the work portion, for a 2/32" tip size a grey
color band
IS provided On the work portion, and An a 3/32" tip size a red color band is
provided on
the work portion. Other identification mechanisms, such as any combination of
letters,
numerals, and symbols may also be used for labeling the tip size of the work
portions.
These identification mechanisms are configured to facilitate selective
identification (i.e.,
by size of their tip) of similar sized work portions 18 and 22. Also, these
identification
mechanisms are configured to permit a user or a tradesman to quickly select
the work
portion 18 or 22 of the desired size without viewing the size of their tip.
100301 In one embodiment, the body portion 12 and the tool. portion 14 may
include a circular-Shaped or a round-shaped cross-sectional configuration.
This circular-
shaped or round-shaped cross-sectional configuration enables the nail set 10
to transmit
only linear force and to: prevent transmitting any torsional force.
NO311 The shoulder portion 26 is constructed and arranged to extend outwardly
from the central portion 38 of the tool portion 14. in one embodiment, the
Shoulder
portion 26 is circumferentially disposed on an external surface 35 in the
central portion
38 of the tool portion 14. In one embodiment, the Shoulder portion 26 is
disposed at the
center of the overall length of the tool portion 14. In one embodiment, the
shoulder
CA 02718256 2010-10-15
8
portion 26 disposed on the central portion 3$ generally include a circular-
shaped
configuration.
[00321 The enlarged shoulder portion 26 is constructed, and arranged to
provide a
direct path thr a force transmitted from the body portion 12. In other words,
When the
tool portion 14 is disposed in the body portion 12 and the body portion 12 is
impacted by
the tool, the force delivered by the tool (e.g,, hammer) to the body portion
12 is
transmitted to the tool portion 14 via the shoulder portion 26. The shoulder
portion 26
includes a first surface portion 19 and a second surface portion 21, wherein
the first
surface portion 19 is generally perpendicular to the second surface portion 21
In one
embodiment, the first surface portion 19 is an annular surface, constructed
and arranged
to engage with a portion of the body portion 12, fir example a forwardmost
circular
surface defining the mouth of the opening 16. The contact areas that are
:thrilled by the
engagement of the first surface portion 19 of the shoulder portion 26 with at
least the
portiOn of the body portion 12 are constructed and arranged to transmit the
three from
the body portion 12 to the tool portion 14,
100331 In one embodiment, the nail set 10 includes 4 lock arrangement 34. The
lock. arrangement 34 includes a movable member 36 (e.g., in the form of an
outer sleeve)
that is movable between a locking position and an unlocking position. In one
embodiment, the movable member 36 is constructed and arranged to move in a
linear
motion (Le., up and down, or back and forth). The movement ofthe xnevable
Member 36
from the locking position to the unlocking position unlocks the tool portion
14 to enable
the tool portion 14 to be removed from the body portion 12. The lock
arrangement 34 is
spring biased into the locked position to prevent the removal of the tool
portion 14 from
the body portion 12.
[0(0341 The lock arrangement 34 includes a spring 40. In one embodiment, the
spring 40 May include a coil spring Or a compression spring. In one
embodiment, the
spring 40 is disposed between the body portion 12 and the movable member 36.
In one
embodiment, the movable member 36 may Mande a recess 42 that is constructed
and
arranged to receive the Spring 40 therewithiit The spring 40 is constructed
and arranged
to engage with at. least a portion of the movable member 36 at one end and
with a split
ring 44 at the other end. The split ring 44 is :secured to the body portion
12. The split
CA 02718256 2010-10-15
9
ring 44 is constructed and arranged to retain the spring 40, when the spring
40 is
compressed by the movable member 36.
100351 The lock arrangement 34 includes one or more ball bearings 46 that are
disposed in an opening 33 in the body portion 12 of the nail set 10. In one
embodiment,
one or intim ball bearings 46 are disposed at circumferentially spaced
locations around
the tool portion 14. The ball bearings 46 are constructed and arranged to
frictionally
engage with a surface 48 of the first work portion 18 or the second work
portion 22.
Specifically, in one embodiment, grooves or notches 50 may be disposed on the
surface
48 of the first work portion 18 or the second work portion 22 to engage with
the ball
bearings 46. In another embodiment, the grooves OT notches 50 may be disposed
on the
surface of the central portion 38 of the tool portion 14. Such grooves or
notches 50 are
located on both sides of the shoulder portion 26. The grooves or notches 50
are
constructed and arranged to lockingly receive the ball bearings 46 therein,
when the lock
arrangement 34 is in the locking position. In one embodiment, the groove or
notch 50 is
an annular groove constructed and arranged to extend circumferentially around
the tool
portion 14.
100361 The movable member 36 includes groove(s) or notch(es) 52 that are
constructed and arranged to receive the ball beating(s) 46 therewithin, when
the lock
arrangement 34 is in the unlocking position. The groove(s) or notch(es) 52
transition
into a ramp surface 41 as the inner surface of the movable member 36 extends
rearwardly from the groove(s) or notch(es) 52, The spring bias of the
spring(s) 40
pushes the movable member 36 forwardly, forcing the ball bearings 46 up the
ramp
surface 41, which thus forces the ball bearings 46 inwardly against the
surface of the tool
portion 14.
100371 Thus, when the lock arrangement 34 is in the locking position, the
movable member 36 is constructed and arranged to apply a force to the bail
bearings 46.
Such force applied to the ball bearings 46 enables the ball bearings 46 to
protrude into an
inner diameter of the body portion 12 and to lockingly engage with the grooves
or
notches 50 that are disposed on the surface 48 of the first work portion 18 or
the second
work portion 22. Therefore, the ball bearings 46 are frictionally engaged with
the
grooves or notches 50 (i.e., on one of the first work portion 18 or the second
work
CA 02718256 2010-10-15
portion 22, which is disposed in the opening 16 of the body portion 12): to
lock the tool
portion 14 within the body portion 12 ,and to prevent the tool portion 14 from
falling out
of the body portion 12 of the nail Set 10. Also, when the lock arrangement 34
is in the
locking position, the spring 40 is in its relaxed configuration.
5 100381 In order to release the tool portion 14 from the body portion 12,
the
movable member 36 is moved rearwards from the locking position to the
unlocking
position (i.e., in the direction of an arrow A as shown in FIG. 4), When the
movable
member 36 is moved from the locking position to the unlocking position, the
movable
member 36 is constructed and arranged to compress the spring 40 In other
words, the
10 portion of the movable member 36, which engages with the spring 40 at
one end thereof,
is constructed and arranged to compress the spring 40 from its relaxed
configuration to a
compressed (or tensioned) configuration. Also, when the movable member 36.js
moved
from the locking position to the unlocking position (i.e.. against the action
of spring 40
and in the direction of the arrow A as shown in FIG. 4), the ball bearings 46
move down
the ramp surface 41 and into the groove(s) or notch(es) 52 in the inner
surface of the
movable member 36. Thus, the ball beatings 46 are able to move outwardly for
disengagement from the grooves or notches 50 on the surface 4$ of the first
work portion
18 or the second work portion 22. This outwardly movement of the ball bearings
46
unlocks the tool portion 14 from the body portion 12, and permits the removal
of the tool
portion 14 from the body portion 12. The ball bearings 46 that are disengaged
from the
grooves or notches 50 on the surface 48 of the tool portion 14 are constructed
and
arranged to move into the groove(s) or notch(es) 52 of the Movable member 36.
Therefore, when the lock arrangement 34 is in the unlocking position, the ball
bearings
46 are constructed and arranged to engage With the groove(s) or notch(es) 52
of the
movable member 36.
100391 The tool portion 14 that is removed frerri the body portion 12 may then
be
reversed (e.g., by 180 degrees) and inserted back into the body portion 14 to
expose
(i.e., outside the body portion 12) the other of the first work portion 18 or
the second
work portion 22 for operation. Once the tool portion 14 is inserted into the
body portion,
the movable member 36 is released back to its lock position. The spring 40 is
constructed and arranged to bias the movable member 36 (i.e., with respect to
the body
portion 12) from unlocking position to the locking position so that the ball
bearings 46
CA 02718256 2010-10-15
that are engaged with the grooves or notches 52 of the movable member 36 are
moved
up the ramp surface 41 and brought into engagement with the grooves or notches
50 of
the first work portion 18 or the second work portion 22, when the tool portion
14 is
inserted back into the body portion 12,
100401 FIGS. 5-7 show another embodiment of the present invention in which a
nail set 100 is shown. The nail set 100 includes a body portion 112 and a tool
portion
114.
100411 As shown in FIGS. 5-7 and FIGS. 9A-9E, the body portion 112 includes a
handle portion 130 and a head portion 132. In one embodiment, the head portion
132
may include a head strike surface 132a that is constructed and arranged to be
impacted
by (i.e., to receive a blow from) an impact delivering tool or a striking
tool, such as a
hammer. The handle portion 130 is constructed and arranged to be gripped by
the user
and may include a manually engageable gripping portion as described in the
previous
embodiment.
[00421 As shown in FIG. 6, the body portion 112 of the nail set 100 may
include
a core portion 109, and an over mold portion 1110. In one embodiment, the over
mold
portion 111 is made of an elastomeric material, a rubber based material, a
plastic based
material or other suitable material. In one embodiment, the over mold portion
1 1 1 may
include first engaging portions I I la that are constructed and arranged to
engage with
second engaging, portions 112a of the core portion 109 to attach the over mold
portion
111 with the core portion 109.
100431 In one embodiment, the first -engaging portions ill a. may include
projections or protruding members extending from. the over mold portion I 1 1.
In such
embodiment, the second engaging portions 112a of the core portion 109 may
include
moves or openings that are Wnstructed and an'anged to receive the first
engaging
portions I 1 Ia. Alternatively, in another embodiment, the first engaging
members 11Ia
may include grooves or openings and the second engaging members 112a may
include
protrusions Or protruding members. It should be appreciated, however, that
this
embodiment is but one example of different types of engagement member shapes,
configurations and/or cOnstruetiena that can be provided, In one embodiment,
as shown
CA 02718256 2010-10-15
12
in FIG. 6, the over mold portion 1 1 1 is attached to the core portion 109
before the handle
portion 130 is attached to the body portion 112.
[0044) An opening 116 of the body portion 112 is constructed and arranged to
receive at least a portion of the tool portion 114. In one embodiment, the
opening 116 of
the body portion 12 is constructed and arranged to receive one of the first
work portion
llg or the second work portion 122 therewithin to lockingly engage the tool
portion 114
with the body portion 112. The opening 116 of the body portion 1.12 generally
may
include a hexagonal shaped configuration. In one embodiment, a portion of the
opening
116 is constructed and arranged to frictionally engage with a portion of the
tool portion
114.
10045) The hexagonal shaped configuration of the. opening 116 is constructed
and arranged to minimize or prevent the rotation of the tool portion 114, when
the tool
portion 114 is received in the body portion 112 (i.e, during use).
10046] The hexagonal shaped configuration of the opening 116 is constructed
and arranged to enhance the engagement between the body portion 112 and tool
portion
114. Enhanced engagement between the body portion 112 and tool ,portion 114
reduces
any irregular rocking or staggering side to side motion of the tool portion
114, when the
tool portion 114 is received in the body portion 112.
10041 The hexagonal shaped configuration of the opening 116 is constructed
and arranged to allow the user to install standard hexagonal shaped
screwdriver bits so as
to use the nail set 100 as a screwdriver *When a need arises.
[0048i In one embodiment, the tool portion 114 generally includes the central
portion 138, the first work portion 118 and the second work portion 122. The
central
portion 138 May generally include a hexagonal shaped configuration that is
constructed
and aaanged to engage with the hexagonal. Shaped opening 116 of ihe body
portion 112.
As will be discussed below, a shoulder portion 126 is disposed in the central
portion 138
of the tool portion 114.
100491 In one embodiment, the nail set 100 includes a lock arrangement 134.
The lock arrangement 134 includes a movable member 136 (e,gõ in the form of an
outer
CA 02718256 2010-10-15
13
sleeve) that is movable between a locking position and an unlocking position.
In one
embodiment, the movable member 136 is constructed and arranged to move in a
linear
motion (i.e., up and down, Or back and forth): The movement of the Movable
member'
136 from the locking position to the unlocking position unlocks the tool
portion 114 to
enable the tool portion 114 to be removed from the body portion 112. The lock
arrangement 134 is spring biased into the locked position to prevent the
removal of the
tool portion 114 from the body portion 112.
100501 The Joe< arrangement 134 includes a spring 140. In one embodiment, the
spring 140 may include a coil spring or a compression spring. In one
embodiment, the
spring 140 is disposed between the body portion 112 and the movable member
136. In
one embodiment, the movable member 136 may include a recess 142 that is
constructed
and arranged to receive the spring 140 therewithin. The spring 140 is
constructed and
arranged to mange with a locking ring 145 at one end and with a split ring 144
at the
Other end. The split ring 144 is secured to the body portion 12. The split
ring 144 is
constructed and arranged to retain the spring 140, When the spring 140 is
compressed by
the locking ring 145. In one embodiment, :the locking ring 145 is constructed
and
arranged to be connected to and movable with the movable member 136.
[0051) The lock arrangement 134 includes one Or more hail bearings 146 that
are
disposed in an opening 133 in the body portion 1.12 of the nail set 100. In
one
embodiment, one or more ball beatings 146 are disposed at circumferentially
Spaced
locations around the tool portion 114. The ball beatings 146 are constructed
and
arranged to frictionally engage with a surface 148 of the first work portion
118 or the
second work portion 122. Specifically. in one embodiment, grooves or notches
150 may
be disposed on the surface 148 of the first work portion 118 or the second
work portion
122 to engage with the ball bearings 146, In another embodiment; the grooves
or
notches 150 may be disposed on the surface, of the central portion 138 of the
tool portion
114. Such grooves or notches 150 are located on bothsides of the shoulder
portion :126.
The grooves or :notches 150 are constructed and arranged to iociiingly receive
the ball
bearings .146 therein, when the lock arrangement 134 is in the locking
position. In one
embodiment, the groove or notch 150 is an annular groove constructed and
arranged to
extend circumferentially around the tool portion 114,
CA 02718256 2010-10-15
14
10521 The recess 142 of the movable member 136 is constructed and arranged to
receive the ball bearing(s) 146 therewithin, when the lock arrangement 134 is
in the
unlocking position. The spring bias of the spring(s) 140 puShes the locking
ring 145
rearwardly (in the direction of an arrow C in the FIG. 5), forcing the ball
bearings 146 to
move out of engagement with the recess 142 and into engagement the surface of
the tool
portion 114.
(0031 Thus, when the lock arrangetricit 134 is in the locking position, a
surface
portion 135 of the movable member 136 is constructed and arranged to apply a
force to
the ball bearings 146. Such force applied to the ball bearings 146 enables the
ball
bearings 146 to protrude into an inner diameter of the body portion 112 and to
lockingly
engage with the grooves or notches 150 that are disposed on the surface 148 of
the first
work portion 118 or the second work portion 122. Therefore, the bail hearings
146 are
frictionally engaged with the grooves or notches 150 (Le., on one of the first
work
portion 1.1.8 or the second work. portion 122, which is disposed in the
opening 116 of the
body portion 112) to lock the tool portion 114 within the body portion 112 and
to prevent
the tool portion 114 from falling out of the body portion 112 of the nail set
100. Also,
when the lock arrangement 134 is in the locking position, the spring 140 is in
its relaxed
configuration.
100541 In order to release the tool portion 114 from the body portion 112, the
movable member 136 is moved forwardly from the locking position to the
unlocking
position (i.e,, in the direction of an arrow B 05 showri in FIG. 5). When the
movable
member 136 is moved from the locking position to the unlocking position, the
locking
ring 145 is constructed and arranged to compress the spring 140. In other
words, the
portion of the locking ring 145, which engages with the spring 140 at one end
thereof, is
constructed and arranged to compress the spring 140 (i.e., against the split
ring 144,
which remains stationary) .from its relaxed configuration to a compressed (or
tensioned)
configuration. Also, when the movable meniber 1.36 is moved from the locking
position
to the unlocking position (i.e., against the action of spring 140 and in the
direction of the
arrow shown in FIG. 5), the ball bearings 146 are received in the
recess 142 of the
movable member 136,. Thus, the ball bearings 146 are able to move outwardly
for
disengagement from the grooves or notches 150 on the surface 148 of thefirst
work
portion 118 or the second work portion 122. This outwardly movement of the
ball
CA 02718256 2010-10-15
bearings 146 unlocks the tool portion 114 from the body portion 112, and
permits the
removal of the tool portion 114 from the body portion 112. ball bearings 146
that are
disengaged from the grooves or notches 150, on the surface 148 of the tool
portion 114
are constructed and arranged to move into engagement with the recess 142 of
the
5 movable member 136. Therefore, When the lock arrangement 134 is in the
unlocking
position, the ball bearings 146 are constructed and arranged to be received
within the
recess 142of the movable member 136,
[0055] The tool portion 114 that is removed from the body portion 112 may then
be reversed (e.g., by 180 degrees) and inserted back into the body portion 114
to expose
10 (i.e., outside the body portion 112) the other of the first work portion
118 or the second
work portion 122 tbr operation. Once the tool portion 114 is inserted into the
body
portion 112, the movable toenther 136 is released back to its lock position.
The spring
140 is constructed and arranged to bias the locking ring 145 attached (or
connected) to
the movable member 136 (i.e., with respect to the body portion 112) from
unlocking
15 position to the locking position so that the ball bearings 146 that are
received within the
recess 142 Of the Movable member 136 are brought into engagement with the
grooves or
notches 150 of the first work portion 118 or the second work portion 122, when
the tool
portion 114 is inserted back into the body portion 112,
100561 Although the invention has been describe4 in detail for the purpose of
illustration, it is to he understood that such detail is solely for that
purpose and that the
invention is not limited to the disclosed embodiments, but, on the contrary,
is intended to
cover modifications and equivalent arrangements that are within the spirit and
scope of
the appended claims. In addition, it is to be understood that the present
invention
contemplates that, to the extent possible, one or more features of any
embodiment can be
combined with one or more features of any other embodiment.
